EP2715242A1 - Condensate collection device - Google Patents
Condensate collection deviceInfo
- Publication number
- EP2715242A1 EP2715242A1 EP12726167.5A EP12726167A EP2715242A1 EP 2715242 A1 EP2715242 A1 EP 2715242A1 EP 12726167 A EP12726167 A EP 12726167A EP 2715242 A1 EP2715242 A1 EP 2715242A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- sensor
- tank
- lid
- tank according
- condensate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/22—Means for preventing condensation or evacuating condensate
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/22—Means for preventing condensation or evacuating condensate
- F24F13/222—Means for preventing condensation or evacuating condensate for evacuating condensate
Definitions
- the present invention relates to a condensate collection tank.
- the present invention relates to a condensate collection tank for an air conditioning system.
- air conditioning systems take in warm air and expel cooler air in order to provide a more comfortable living or working environment .
- the process of chilling the air causes condensation to form on the heat exchanger, producing a steady stream of water which drips off of the heat exchanger, into a collection tray, and then to a drain.
- the amount of water produced depends on the humidity level in the environment and other factors.
- a condensate removal pump is typically employed, in combination with a condensate collection tank, to convey the water through a discharge tube to the outside of a building.
- Such pumps are preferably demand driven so that they only operate when there is water waiting to be discharged from the system.
- a sensor is provided within the condensate collection tank to determine when the condensate liquid has reached a predetermined level and should be removed from the tank.
- micro-organisms such as spores and bacteria can collect on the moist surfaces of the heat exchanger.
- the condensate collection tank is mounted either within the air conditioning unit, or within a drain conduit of the air conditioning unit, in an attempt to hide the tank from view.
- the capacity of such condensate collection devices is generally reduced due to the confines of the unit or conduit and may not be large enough to store sufficient condensate such that the pump is not required to be continuously running. Further, positioning the tank within the air conditioning unit or drain conduit may hinder the servicing or maintenance of the tank.
- the condensate collection tank adjacent to the air conditioning unit, particularly if the space within the air conditioning unit, or drain conduit is limited. Further, as the condensate will typically drain from the collection tray to the collection tank under the force of gravity, it is preferable for the tank to be positioned underneath the unit. However, in order for a tank which is mounted underneath an air conditioning unit to be easily serviced and maintained, it is necessary to leave a significant clearance, for example at least 35mm, between the air conditioning unit and the condensate collection tank. This enables the tank lid to be removed to allow access to the inside of the tank, for example to remove debris, without the need for the tank to be removed from the wall.
- the present invention provides a condensate collection tank for an air conditioning system, comprising a body for storing condensate liquid, a lid releasably connectable to the body to form the tank, a mounting bracket for fixing the lid to a mounting surface, an inlet port for condensate liquid from the air conditioning system, an outlet port for condensate liquid from the tank, a sensor for determining whether an amount of condensate liquid in the tank exceeds a threshold value, and a controller for controlling removal of the condensate liquid from the tank via the outlet port when the sensor determines that the threshold value has been exceeded.
- the tank can be mounted to a mounting surface, such as a wall or ceiling, via the lid.
- the body can then be detached from the lid and removed to allow internal components of the tank to be serviced or replaced. Consequently, it is not necessary to provide a clearance between the lid and the air conditioning system.
- the tank may be positioned much closer to the air conditioning system than would be otherwise possible, resulting in a compact arrangement .
- This arrangement also has the advantage that the lid and body can be separated for maintenance without disturbing any sensors provided in the lid, since the lid is unmoved.
- the tank comprises at least one resilient clip for releasably connecting the lid to the body.
- the sensor may be robust enough to withstand damage and/or dislodgement during the assembly of the tank, or during removal of the body from the lid.
- the tank may further comprise a barrier which at least partially surrounds the sensor. In addition to protecting the sensor during the assembly or disassembly of the body and the lid, the barrier may also serve to reduce the instances of false readings by the sensor. Such false readings may be caused by a build-up of organic sludge in the condensate tank, or by splashing of the sensor by condensate when it enters the tank.
- the barrier is mounted on the underside of the lid and extends away from the lid at least as far as the end of the sensor.
- the barrier is formed integrally with the lid. This reduces the number of components requiring assembly and the time taken to assemble the tank.
- the barrier is formed as a separate component which is retained with respect to the sensor and rotatably and axially moveable relative to the sensor.
- a gap of at least 1mm is provided between the barrier and the sensor. This prevents beads of condensate from forming between the sensor and the barrier which may cause false sensor readings.
- the gap is in the range of 1.2-1.8mm.
- the barrier may comprise a plurality of elongate prongs extending substantially parallel to a longitudinal axis of the sensor.
- the tank comprises a second sensor for determining whether an amount of condensate liquid in the tank exceeds a second threshold value.
- the controller may be configured to turn-off the air conditioning unit to prevent the condensate level from rising further, or activate a warning mechanism such as an audible and/or visual alarm, once the second threshold level has been reached.
- the second sensor forms part of a failsafe system.
- the sensor comprises a resilient clip for retaining the sensor in the lid. This enables the quick installation of the sensor into the lid and reduces the environmental hazards associated with using adhesives or potting compounds.
- the tank could be provided with a single inlet port and a single outlet port.
- the inlet port and the outlet port may be located either in the lid or the body and a second inlet port and outlet port located in the other of the lid or body.
- one of the inlet ports and one of the outlet ports may be selectively closable by a user. This enables multiple permutations for the connection of hoses to the tank to suit various installations.
- the lid When installed, a cable of the sensor, connecting the sensor to the pump, which in turn is connected to the air conditioning unit, could hang over the side of the tank, or rest on top of the lid of the tank. With such an arrangement, the lid could not be mounted flush with the air conditioning unit unless a recess were to be provided in the air conditioning unit.
- the lid comprises a cable recess for accommodating the cable of the sensor. This enables the sensor cable to be located in the recess such that it can be flush mounted to the lid. This further improves the appearance of the system and enables the tank to be positioned against the air conditioning unit.
- the cable recess extends from a mounting location of the sensor to more than one location on an edge of the lid. This enables the cable to be routed in alternative directions depending on the configuration of the air conditioning system.
- the ports may protrude beyond the external surfaces of the tank, such that the connector portions of any hoses connected to the ports are plainly visible.
- at least one of the inlet or outlet ports is surrounded by a connector recess.
- the present invention also provides an air conditioning system comprising a condensate collection tank as set out above .
- the present invention further provides a boiler system comprising a condensate collection tank as set out above.
- Figure 1 is a perspective view of a condensate collection tank in accordance with the present invention, with the sensor removed for clarity
- Figure 2 is a plan view of the lid of the condensate collection tank of Figure 1;
- Figure 3 is a plan perspective view of the lid of the condensate collection tank of Figure 1;
- Figure 4 is a bottom perspective view of the lid of the condensate collection tank of Figure 1, showing the sensor;
- Figure 5 is a section view through line A-A of the condensate collection tank of Figure 2, showing the sensor and port caps;
- the condensate collection tank 1 is shown in Figure 1, and comprises a lid 10, a body 20 for storing condensate liquid, a sensor recess 30, a lid outlet port 40, a lid inlet port 50 and a vent port 60.
- the lid outlet port 40, the lid inlet port 50 and the vent port 60 are formed in a lid port recess 45 which extends around the ports 40, 50, 60, such that the top of each of the ports 40, 50, 60 does not protrude beyond the outer surface of the lid 10.
- the body 20 is provided with a body outlet port 80 formed in a body outlet port recess 85 extending around the port 80, and a body inlet port 90 formed in a body inlet port recess 95 extending around the port 90, such that the body outlet and inlet ports 80, 90 do not protrude beyond the outer surface of the body 20 (as shown in Figure 5 and discussed below) .
- the tank 1 also comprises a flexible clip 70 on either side of the lid 10, each clip 70 mating with a corresponding lug or recess (not shown) on the body 20.
- the tank 1 can be formed of any suitable material. Beneficially, such material will be resistant to ultra-violet light and temperature
- the tank may be formed from injection-moulded polycarbonate.
- the lid 10 of the tank 1 comprises a barrier 100 integrally moulded to the underside of the lid 10.
- the barrier 100 comprises four elongate prongs 102 extending substantially parallel to a sensor 104 of the tank 10, from the bottom of the sensor recess 30 to the bottom of the sensor 104.
- a gap of at least 1mm is provided between the sensor 104 and each of the prongs 102.
- the sensor recess 30 has sensor latches 106 for retaining the sensor 104 in the lid 10.
- the lid 10 further comprises a cable recess 108 and a port recess 110.
- the cable recess 108 extends from the sensor recess 30 to either lateral edge of the lid 10 and includes cable lugs 109 which serve to provide an interference fit with the cable 105 of the sensor 104.
- the lid 10 has two mounting brackets 112 attached to one side, for fixing the lid 10 to a mounting surface.
- the lid outlet port 40 comprises an outlet port tube 113 extending from the bottom of the port recess 110 towards the bottom of the tank 1, for allowing condensate to be drawn out of the tank 1 by a pump (not shown) .
- the lid 10 also has a gasket 114 around its circumference for providing a hermetic seal between the lid 10 and the body 20 when the tank 1 is assembled.
- the gasket 114 is formed from a closed-cell foam.
- the body 20 comprises a body outlet port 80 located in a body outlet port recess 85 and a body inlet port 90 located in a body inlet port recess 95.
- the body outlet and inlet ports 85, 95 are shown as being closed by port caps 208 to prevent the escape of condensate through these ports.
- the port caps 208 may be placed over the lid inlet and outlet ports 40, 50 in an alternative installation.
- the sensor cable 105 has a lug 116 for retention of the cable 105 in the sensor latches 106 of the lid 10.
- the sensor has a first thermistor bead 118 towards its distal end for sensing when the condensate level reaches a first threshold value and a second thermistor bead 120 towards its proximal end for sensing when the condensate level reaches a second threshold value .
- the drain tray of the air conditioning unit (not shown) is connected to either the lid inlet port 50, or the body inlet port 90, depending on the intended configuration of the air conditioning system. This connection may be made by use of an inlet hose or by way of a fixed port on the air conditioning unit.
- the pump (not shown) is connected to either the lid outlet port 40 or the body outlet port 80.
- Port caps 208 are placed over the inlet or outlet ports which remain unconnected to, in order to selectively close these ports.
- a vent hose (not shown) is connected to the vent port 60. Since the tank 1 is provided with port recesses 45, 85, 95, the hose connectors and port caps 208 are contained within the confines of the tank 1.
- the sensor cable 105 is then located in the cable recess 108 in the desired direction and held in position by - li the cable lugs 109.
- the lid 10 is then attached to a mounting surface, for example a wall, using the mounting brackets 112. This can be achieved in any conventional manner, for example by using self-tapping screws.
- the body 20 is then connected to the lid 10 using the clips 70 to form the tank.
- the foam gasket 114 around the circumference of the lid 10 creates a hermetic seal between the lid 10 and the body 20 which can be maintained despite creep and/or shrinkage of the lid 10 and/or body 20 over time.
- the flush mounting of the sensor cable 105 in the cable recess 108 and port recesses 45, 85, 95 allows the tank 1 to be flush mounted against the air conditioning unit.
- the condensate enters the collection tank 1 via the inlet hose and the inlet port to which the hose is connected.
- the sensor 104 is shielded from the inrush of cold water by the barrier 100.
- the condensate liquid which has entered the tank 1 is thus stored in the body 20 of the tank 1.
- the condensate liquid reaches the first threshold level, it is sensed by the first sensor and the controller activates a pump to discharge the condensate via the outlet hose and the outlet port to which the hose is connected. If the condensate level continues to rise to the second threshold level, it is sensed by the second sensor and the controller sets off an alarm that can deactivate the air conditioning unit. In this manner, if the first sensor should fail, the second sensor provides a failsafe. If the condensate level falls below the second threshold level, the air conditioning unit may be restarted. Nevertheless, if the condensate level rises further, it will exit the tank 1 through the vent port 60 where it can be conveyed to any suitable location. For example, the condensate could be returned to the drain tray, to an additional tank, or to an exterior gutter, as required by the installer or layout of the building.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Devices For Blowing Cold Air, Devices For Blowing Warm Air, And Means For Preventing Water Condensation In Air Conditioning Units (AREA)
- Air Conditioning Control Device (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GBGB1109240.0A GB201109240D0 (en) | 2011-06-01 | 2011-06-01 | Condensate collection device |
PCT/GB2012/051229 WO2012164289A1 (en) | 2011-06-01 | 2012-05-31 | Condensate collection device |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2715242A1 true EP2715242A1 (en) | 2014-04-09 |
EP2715242B1 EP2715242B1 (en) | 2020-04-15 |
Family
ID=44310748
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP12726167.5A Active EP2715242B1 (en) | 2011-06-01 | 2012-05-31 | Condensate collection device |
Country Status (4)
Country | Link |
---|---|
US (2) | US20140182321A1 (en) |
EP (1) | EP2715242B1 (en) |
GB (1) | GB201109240D0 (en) |
WO (1) | WO2012164289A1 (en) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10731919B1 (en) * | 2015-09-15 | 2020-08-04 | John Gutierrez | Cooler with internal temperature monitor |
US10422567B2 (en) | 2015-12-30 | 2019-09-24 | Schneider Electric It Corporation | Condensate collection device |
US10434439B2 (en) | 2017-09-29 | 2019-10-08 | DewGood, Inc. | Portable indoor/outdoor atmospheric water generator |
US10913028B2 (en) | 2017-09-29 | 2021-02-09 | DewGood, Inc. | Portable indoor/outdoor atmospheric water generator |
US20220281419A1 (en) * | 2021-03-02 | 2022-09-08 | Guy Raviv | Utility Water from a Vehicle |
GB2614908B (en) * | 2022-01-24 | 2024-04-17 | Aspen Pumps Ltd | A condensate pump assembly |
Family Cites Families (24)
Publication number | Priority date | Publication date | Assignee | Title |
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US4108172A (en) * | 1975-09-25 | 1978-08-22 | Moore Jr George B | Carbon dioxide absorption canister for use with analgesia equipment |
JP3022188B2 (en) * | 1994-08-09 | 2000-03-15 | 三洋電機株式会社 | Drain water treatment device for air conditioner |
IT242870Y1 (en) * | 1997-07-31 | 2002-02-04 | Nicola Pignolo | BUILT-IN BOX FOR THE SUPPLY OF THE INDOOR UNITS OF THE AIR CONDITIONING SYSTEMS, PROVIDED WITH A COLLECTION-CONDENSATE CHANNEL |
US5964371A (en) * | 1998-02-12 | 1999-10-12 | Mccabe; Ronald Paul | Disposable reservoir for evaporative coolers |
US6209573B1 (en) * | 1998-06-02 | 2001-04-03 | Chin Lye Chau | Wet battery and vehicle-based water management system |
US5975113A (en) * | 1998-08-06 | 1999-11-02 | Haining; Michael L. | Air conditioner drain pan treatment dispenser |
US6322326B1 (en) * | 1999-01-29 | 2001-11-27 | Lee W. Davis | Modular condensate pump assembly |
US20040119211A1 (en) * | 2001-06-11 | 2004-06-24 | Robins James W. | Metal making lance assembly |
US6698215B2 (en) * | 2002-05-31 | 2004-03-02 | Advanced Distributor Products Llc | Level sensory device and mounting bracket therefor |
US20050092009A1 (en) * | 2003-11-01 | 2005-05-05 | Thurman Timothy T. | Air conditioner pad and water recycling tank |
US7540167B2 (en) * | 2004-07-08 | 2009-06-02 | Dean Murphy | Condensed water production system |
US7252482B2 (en) * | 2004-08-24 | 2007-08-07 | Beckett Corporation | Motor driven pump with improved motor cooling air flow |
US8651824B2 (en) * | 2005-03-25 | 2014-02-18 | Diversitech Corporation | Condensate pump |
WO2006135169A2 (en) * | 2005-06-13 | 2006-12-21 | Lg Electronics Inc. | Dehumidifier |
EP1873298B1 (en) * | 2006-06-27 | 2012-06-27 | Lg Electronics Inc. | Steam generating device and washing machine having the same |
US20090064698A1 (en) * | 2007-09-12 | 2009-03-12 | Spanger Gerald S | Condensate liquid pumping system |
GB0801063D0 (en) * | 2008-01-21 | 2008-02-27 | Charles Austen Pumps Ltd | Conduit for a condensate removal pump |
US8182243B2 (en) * | 2008-08-15 | 2012-05-22 | Diversitech Corporation | Condensate pump |
US8169314B2 (en) * | 2008-08-29 | 2012-05-01 | Cantolino Christopher R | Water sensor switch system |
US20100180618A1 (en) * | 2009-01-16 | 2010-07-22 | Gavan William J | Water collection device |
EP2270401A1 (en) * | 2009-06-08 | 2011-01-05 | Bingdian Air Conditioning Co., Ltd. | Room air conditioner of a split type air conditioner system |
US8191307B2 (en) * | 2009-10-21 | 2012-06-05 | Rain Bird Corporation | System and method for harvested water irrigation |
TWM391600U (en) * | 2010-01-15 | 2010-11-01 | Holimay Corp | Drain connector set for air conditioning and draining device |
US20110272043A1 (en) * | 2010-04-15 | 2011-11-10 | Little Giant Pump Company Llc | Condensate removal system and method |
-
2011
- 2011-06-01 GB GBGB1109240.0A patent/GB201109240D0/en not_active Ceased
-
2012
- 2012-05-31 EP EP12726167.5A patent/EP2715242B1/en active Active
- 2012-05-31 US US14/122,887 patent/US20140182321A1/en not_active Abandoned
- 2012-05-31 WO PCT/GB2012/051229 patent/WO2012164289A1/en active Application Filing
-
2017
- 2017-09-01 US US15/694,202 patent/US10260770B2/en active Active
Non-Patent Citations (1)
Title |
---|
See references of WO2012164289A1 * |
Also Published As
Publication number | Publication date |
---|---|
EP2715242B1 (en) | 2020-04-15 |
GB201109240D0 (en) | 2011-07-13 |
WO2012164289A1 (en) | 2012-12-06 |
US20170363317A1 (en) | 2017-12-21 |
US10260770B2 (en) | 2019-04-16 |
US20140182321A1 (en) | 2014-07-03 |
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